Local Calling Guide

Area code/prefix search

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NPA: 854 [Rate centres in NPA 854] [Dial plan for NPA 854]

NXX: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
854-312 A Charleston SC   635C TELEPORT COMMUNICATIONS AMERICA SC- LLC 436   2026-11-16   
854-312 6 Charleston SC   635C TELEPORT COMMUNICATIONS AMERICA SC- LLC 436   2026-11-16   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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